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25 ing a wrench seat and a shoulder tosupport `in section and the mixing upwardly from the FRED J. WARD, 0F LONG- BEACH, CALIFORN.

Gas-BURNER.

ascesa-a.

To all whom t may concern:

Be it known that 1, FRED J. WARD, a citizen of the United States, residing at Lon Beach, in the county of Los Angeles an State of California, have invented new and useful Improvements in Gas Burners, of `which the following is a specification.

My inrention relates to gas burners .and consists vof the novel featuresherein shown, described and claimed.

. Figure 1 is a'side elevation of a gas burner embodying the principles of my invention as seen looking lin thefdirection indicated by the arrow 1 in Fig. 2.

Fig. 2 is a vertical diametrical sectional det-ail on the line 242 of Fig.1.

Fig. 3 is a fragmentary side elevation showing a modified form, parts being shown tube being horizontal instead of vertical. A

Referring to Figs. 1 and 2,- the gas pipe 1 is screwed into the lower end of an elbow 2, a nipple 3 is screwed down into the elbow 2, and an orifice 4 is screwed upon the nipple 3. The orifice 4 has a hexagon head 5 formthe burner. The supporting crosspiece 6 has a `central opening to lit the orifice 4 above the head 5, and a straight annular wall 7 -is the ends of the crossformed integral with piece 6, there being air passages 8 and 9 through the wall at the sides of the crosspiece. The tapered annular wall 10 extends annular wall 7, the straight neck 11 extends upwardly from the tapered annular wa'll '10, and .the burner screen base 12 extends outwardly from the upper end of the neck 11, there being an annular flange 13 extendipgupwardly t-he base 12 ynear its outer edge, thus producing a shoulder 14 outside of the flange 13.' The concavo-eonvex mixing screen 15 rests upon the'` flange 13 andfbows downwardly,

i there being a distributing chamber' lwith-` flange 13 and resting upon the inwardlyinclined upwardly extending,

in the flange 13 belowthe sc reen l15. y

4- The burner screen comprises the straight` annular wall 17 fitting closely around" .the

annular-"perforatedwall 18 extending from the upper edge of the straight wall 17, and the inverted conical wallv 19 extending inwardly and downwardly from the upper inner edge of the wall 18, the point 20 of the wall 19 resting upon the center of the mixing screen 15 to press. the screen against the flange 13,

theaxial center of all the parts,

the apertures 21 and l face of the wall 18.

' the shutter and tapped the shoulder 14,f

.nular perforated Specification of Letters Patent. Patented July 15, 1919. Application filed April 22, 1.919. Serial No. 291,863.

' and hold the screen in place. The perforations 21 through the wall 18 are inclined at an angle of about 45 and lead from the mixture chamber 22 above the screen 15.

The point 20 of the burner screen is in direct line with the orifice outlet 2.3 and at so that the gas discharging from the orifice 23 will draw air through the openingsA 8 and 9, mix

the air and gas in the neck 1 1, and distribute the air and gas to the chamber 16, and the air and gas will pass through the screen 15 and forni a perfect combustible mixture in the chamber 22 and be discharged through burn against the outer The cone 19 serves materi ally in directing the force of the draft to the openings V21. 1n cross section the' lines of the cone 19 are parallel with the lines of the .openings 21.

Referring to Fig. 3, the neck 24 is elongated and curved'to a right angle, so that the inlet is horizontal and a shutter 25 is `placed in position to regulatethe openings around the orifice 26. The shutter 25 is held in place'by a screw 27 inserted through a slot in into the supporting crosspiece 28. The burner lhead 29 is identical with that shown in ,-Figs. 1 and 2.

Various changes may be made without departino' from lthe spirit of my invention as claime 1 claim: i

1. A gas burner` comprising a supporting crosspiecev having a central opening to fitan orifice, a straight annular wall formed 4intetapered annular wall, a burner screen base extendingoutwardly from the upper end of the neck and having anfannular flange extending upwardly into its edge and forming a shoulderl outside of the flange, a concavo convex mixing screen resting upon the ari-- l and a'burner screen having a; vstraight annular wall vfitting around the shoulder, an yinclined an,-` wall extending upwardly the straight-annular wall, p.

nular flange flange uponthe andfinwa'rdly from and an inverted cone extending downwardly and inwardly lfrom theupper edgeV of the' inclined 4wall and of the mixing screen.

extending A'upwardly from the fitting against the center- 2. In a gas burner, a neck, a burner screen( ing a shoulder outside of the flange, a concavo-convex mlxing screen resting upon the annular flange and a burner screen having a straight annular lwall fitting around the flange upon the shoulder, an inclined annnlar perforated Wall extending u Wardl and inwardly from the straight annu ar Wal and an inverted cone extending downwardly and` inwardly from the upper edge of the inclined Wall andtting against the center of the mixing screen.

In testimony whereof I have signed my name to this specicaton.l

' FRED J. WARD. 

